Question 405 · LDEK · Root canal obturation
Indicate the true statements concerning gutta-percha cones:
1) their adhesion to the dentin is very good;
2) they should not be sterilized;
3) they are available in standardized and conventional form;
4) standard gutta-percha cones can be found in the following sizes: XF, MF, F, FM, M, L;
5) gutta-percha cones can be disinfected in a sodium hypochlorite solution.
The correct answer is:
2) they should not be sterilized;
3) they are available in standardized and conventional form;
4) standard gutta-percha cones can be found in the following sizes: XF, MF, F, FM, M, L;
5) gutta-percha cones can be disinfected in a sodium hypochlorite solution.
The correct answer is:
- A. 1,2,3.
- B. 1,4,5.
- C. 1,3,4.
- D. 2,3,4.
- E. 2,3,5.
Hint
Recall what gutta-percha does when heated, whether it bonds to dentin, and how ISO and auxiliary (non-standard) cone sizes are labelled.
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